US Airways' ( UAIRQ.OB) flight attendants have approved wage and benefit concessions. The airline's unit of the Association of Flight Attendants said more than 64% of members who voted supported the concessions, which union negotiators hashed out with management last month. This is the third round of concessions the union has made in two years. "This was not easy," said Teddy Xidas, president of the union's Master Executive Council for US Airways. "Our members have made tremendous sacrifices over the past several years. With this agreement, flight attendants have given everything they can give." US Airways filed for Chapter 11 bankruptcy protection for the second time in two years last September. Under the latest agreement, flight attendants will accept pays cuts of 8.4% to 9%, along with decreases in vacation time and vacation pay, a 30% penalty on sick pay, and increases in hours worked. Shares of the airline finished Wednesday's session down 7 cents, or 6.1%, at $1.07.